We look at the division of 99873 by 19 
The aim is to understand the frequency of 19 in 99873.

Going ahead to step 1:
19 can be fit into 9 0 times, resulting in a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 19

On to step 2:
99 divided by 19 is 5 with a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 4 after subtracting 95 from 99.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 19

Step 3:
48 divided by 19 is 2 with a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 52.0
The remainder is 10 after subtracting 38 from 48.
Take the next digit (7) from the dividend and append it to 10, then repeat: 107 / 19

Going ahead to step 4:
The number 19 fits into 107 5 times, leaving a remainder of 12.
Record the quotient 5 as the next digit in the result. 
Result so far: 525.0
If we take 95 away from 107, we end up with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 19

Going ahead to step 5:
123 divided by 19 is 6 with a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 5256.0
If we subtract 114 from 123, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 6:
If we divide 90 by 19, we get 4 and a remainder of 14.
The number 4 becomes the next digit in our result. 
Result so far: 5256.4
If we subtract 76 from 90, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 7:
When dividing 140 by 19, we get 7 with a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 5256.47
The remainder is 7 after subtracting 133 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 8:
19 goes into 70 3 times with a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 5256.473
Deduct 57 from 70 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 9:
The number 19 fits into 130 6 times, leaving a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 5256.4736
Subtracting 114 from 130 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 10:
160 divided by 19 is 8 with a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 5256.47368
If we take 152 away from 160, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 11:
80 divided by 19 is 4 with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 5256.473684
If we subtract 76 from 80, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 12:
The number 19 fits into 40 2 times, leaving a remainder of 2.
The next digit of our result is 2. 
Result so far: 5256.4736842
Subtracting 38 from 40 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
19 goes into 20 1 times with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 5256.47368421
Subtracting 19 from 20 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The quotient of the division is 5256.47368421, and the remainder is 1e-09.